Update app.py

app.py

@@ -128,10 +128,10 @@ def main():
             past_requests_ = users.get(ip_, 0)
             free_tier_ = False
             if not api_key_ or not api_secret_:
-                free_tier = True
+                free_tier_ = True
                 api_key_ = os.environ["api_key"]
                 api_secret_ = os.environ["api_secret"]
-            if free_tier and past_requests_ >= FREE_TIER:
+            if free_tier_ and past_requests_ >= FREE_TIER:
                 logging.info(f"Free tier exceeded for {ip_}")
                 return 16000, audio_msg
             logging.info(f"Total number of requests: {counter}. {past_requests_} for {ip_}")